Hazard ratios (HR) and 95% confidence intervals (CI) for waist/hip ratio, waist circumference, and hip circumference in relation to lung cancer risk among never smokers, NIH-AARP Diet and Health Study (1995–2006).

Adjusted for age, education, ethnicity, alcohol consumption, vigorous physical activity, physical activity at work, total caloric intake.

Additionally adjusted for BMI (continuous) at baseline.

Model with waist, adjusted for hip; Model with hip, adjusted for waist.

Sex-specific quartiles based on the entire subcohort (respondents of risk factor questionnaire).